Gallery: Happy birthday, William Shatner!

Screengrab, CND03.21.2012

William Shatner, in his iconic role as Captain James T. Kirk on Star Trek.

Screengrab
/ CND

In Roger Corman’s The Intruder, William Shatner played Adam Cramer, a self-proclaimed “social reformer” who stirs up trouble among a southern town’s white population as the United States prepares for social integration between blacks and whites. Credit: Screengrab, Shatnerstoupee.blogspot.caScreengrab
/ Shatnerstoupee.blogspot.ca

William Shatner’s first-ever screen appearance was in a forgotten 1951 Canadian film called The Butler’s Night Off, in which he played one of a band of crooks who kill the owner of a clothing store, a murder witnessed by the butler on, you guessed it, his night off. This film marks the only time Shatner was credited as "Bill."Screengrab
/ shatnerstoupee.blogspot.ca

William Shatner as Captain James T. Kirk in Star Trek II: The Wrath of Khan, uttering his most famous line: "Khaaan!"Screengrab
/ khaaan.com

In Boston Legal, William Shatner played lawyer Denny Crane, a self-proclaimed legend of a lawyer who loves to sign his name to verbal utterances. Photo by Scott Garfield, American Broadcasting CompaniesScott Garfield
/ American Broadcasting Companies

William Shatner, performing for a sold-out crowd at Montreal’s Theatre St.Denis for the Just for Laughs festival. Shatner hosted the evening, introducing comics that included Jebb Fink, Fiona O'Laughlin and Zach Galifianakis. July 21, 2007.John Morstad
/ Montreal Gazette

William Shatner isn’t just an actor. He’s also a prolific author, with titles including "Star Trek Academy Collision Course" and the "TekWar" series to his name. Here, Shatner signs copies of his new book "Star Trek Academy Collision Course" at Book Soup on November 20, 2007 in West Hollywood, California.Mark Mainz
/ Getty Images

William Shatner played the title role on $#*! My Dad Says, based on the Twitter account and book of the same name. The show bottomed out in under 140 characters, but that was likely the result of poor writing.Cliff Lipson
/ CBS

TV Host - William Shatner being interviewed for a story about Weird or What, a History Channel series that offered investigations into the unexplainable.Chris Lackner
/ Postmedia News

A proud Canadian - William Shatner arrives at the National Arts Centre with his wife Elizabeth Martin ahead of his job hosting the 31st Genie Awards in Ottawa on March 10, 2011.Bruno Schlumberger
/ Ottawa Citizen